osbuild-worker: handle error wrapping from dnfjson package

osbuild/images#751 wrapped the errors in the images/dnfjson package to
provide more details, the depsolve job should take this into account to
map the dnfjson error to the correct worker client error.

This caused user input errors errors to be misclassified as internal
errors, triggering depsolve job failure alerts.

cmd/osbuild-worker/jobimpl-depsolve.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"net/url"
 	"strings"
@@ -78,12 +79,12 @@ func workerClientErrorFrom(err error, logWithId *logrus.Entry) *clienterrors.Err
 		logWithId.Errorf("workerClientErrorFrom expected an error to be processed. Not nil")
 	}
 
-	switch e := err.(type) {
-	case dnfjson.Error:
+	var dnfjsonErr dnfjson.Error
+	if errors.As(err, &dnfjsonErr) {
 		// Error originates from dnf-json
-		reason := fmt.Sprintf("DNF error occurred: %s", e.Kind)
-		details := e.Reason
-		switch e.Kind {
+		reason := fmt.Sprintf("DNF error occurred: %s", dnfjsonErr.Kind)
+		details := dnfjsonErr.Reason
+		switch dnfjsonErr.Kind {
 		case "DepsolveError":
 			return clienterrors.New(clienterrors.ErrorDNFDepsolveError, reason, details)
 		case "MarkingErrors":
@@ -96,7 +97,7 @@ func workerClientErrorFrom(err error, logWithId *logrus.Entry) *clienterrors.Err
 			// by dnf-json and not explicitly handled here.
 			return clienterrors.New(clienterrors.ErrorDNFOtherError, reason, details)
 		}
-	default:
+	} else {
 		reason := "rpmmd error in depsolve job"
 		details := fmt.Sprintf("%v", err)
 		// Error originates from internal/rpmmd, not from dnf-json

cmd/osbuild-worker/jobimpl-depsolve_test.go

@@ -26,6 +26,11 @@ func TestWorkerClientErrorFromDnfJson(t *testing.T) {
 	entry, hook := makeMockEntry()
 	clientErr := worker.WorkerClientErrorFrom(dnfJsonErr, entry)
 	assert.Equal(t, `Code: 20, Reason: DNF error occurred: DepsolveError, Details: something is terribly wrong`, clientErr.String())
+
+	wrappedErr := fmt.Errorf("Wrap the error: %w", dnfJsonErr)
+	clientErr = worker.WorkerClientErrorFrom(wrappedErr, entry)
+	assert.Equal(t, `Code: 20, Reason: DNF error occurred: DepsolveError, Details: something is terribly wrong`, clientErr.String())
+
 	assert.Equal(t, 0, len(hook.AllEntries()))
 }